如果在李克特 1-5 等级中选择低于 3 的任何内容，则显示评论文本框

Question

我正在尝试创建一个具有 1-5 比例选项的调查。如果用户选择 1-3 的值，我想让 javascript 显示一个评论文本框。任何人都可以帮助我使用 javascript 代码吗？

这是我的代码：

<li>
  <span class="survey-question">How would you rate your experience with online shopping?</span>
  <div class="survey-answer">
    <label>
          <input class="radio-button" type="radio" name="required" value="1"> Horrible
        </label>
    <label>
        <input class="radio-button" type="radio" name="required" value="2"> Bad
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="3"> So-So
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="4"> Great
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="5" checked> Awesome!
        </label>
  </div>


  <!-- If an answer <= "So-So or less", display: -->
  <div id="improvement" class="new">
    <span class="survey-question">How can we improve?</span>
    <textarea class="col-md-10" rows="3" id="answer" placeholder="Comments..."></textarea>
  </div>
</li>

Answer 1

只需连接一个更改侦听器，然后根据您的情况显示隐藏（我包括 JQuery 只是为了方便，但您可以使用 vanilla，没问题）：

根据您的评论，我更新了代码片段以处理多个问题。我必须删除 "id" 字段，这样您就没有重复的标识符，并且我通过“.new”class 将文本框作为目标 - 虽然这适用于示例，但使用.parent().parent() - 但它足以让你上路。此外，您必须为单选按钮的 "name" 字段提供每组不同的标识符。

$(".new").hide();
$("input").on("change",handleChange);
function handleChange(e){
    var rating = $(e.currentTarget).val();
    var $_textBox = $(e.currentTarget).parent().parent().next(".new");
    if(rating < 4 && $_textBox){
        $_textBox.show();
    }else{
        $_textBox.hide();
    }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<li>
  <span class="survey-question">QUESTION 1: How would you rate your experience with online shopping?</span>
  <div class="survey-answer">
    <label>
          <input class="radio-button" type="radio" name="required" value="1"> Horrible
        </label>
    <label>
        <input class="radio-button" type="radio" name="required" value="2"> Bad
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="3"> So-So
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="4"> Great
        </label>
    <label>
          <input class="radio-button" type="radio" name="required" value="5" checked> Awesome!
        </label>
  </div>


  <!-- If an answer <= "So-So or less", display: -->
  <div class="new">
    <span class="survey-question">How can we improve?</span>
    <textarea class="col-md-10" rows="3" id="answer" placeholder="Comments..."></textarea>
  </div>
</li>
<br>
<li>
  <span class="survey-question">QUESTION 2: How would you rate your experience with online shopping?</span>
  <div class="survey-answer">
    <label>
          <input class="radio-button" type="radio" name="required2" value="1"> Horrible
        </label>
    <label>
        <input class="radio-button" type="radio" name="required2" value="2"> Bad
        </label>
    <label>
          <input class="radio-button" type="radio" name="required2" value="3"> So-So
        </label>
    <label>
          <input class="radio-button" type="radio" name="required2" value="4"> Great
        </label>
    <label>
          <input class="radio-button" type="radio" name="required2" value="5" checked> Awesome!
        </label>
  </div>


  <!-- If an answer <= "So-So or less", display: -->
  <div class="new">
    <span class="survey-question">How can we improve?</span>
    <textarea class="col-md-10" rows="3" id="answer" placeholder="Comments..."></textarea>
  </div>
</li>

Answer 2

使用 onchange 事件 onchange="getRating(this)" 以从无线电输入中捕获选择并从中获取值。如果值为 1、2 或 3，将出现改进部分：

var feedbackElem = document.getElementById("improvement")
if (el.value == 3 || el.value == 2 || el.value == 1) { 
  //display improvement}
else { 
  //hide it 
}

function init() {
  var feedbackElem = document.getElementById("improvement")
  feedbackElem.style.display = "none"
}

init ();

function getRating(el) {
  var feedbackElem = document.getElementById("improvement")
  if (el.value == 3 || el.value == 2 || el.value == 1) {
    feedbackElem.style.display = "block"
  } else {
    feedbackElem.style.display = "none"
  }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<li>
  <span class="survey-question">How would you rate your experience with online shopping?</span>

  <div class="survey-answer">
    <label> 
      <input class="radio-button" type="radio" name="required" value="1" onchange="getRating(this)"> Horrible </label>

    <label> 
      <input class="radio-button" type="radio" name="required" value="2"onchange="getRating(this)"> Bad  </label>

    <label> 
      <input class="radio-button" type="radio" name="required" value="3"onchange="getRating(this)"> So-So  </label>

    <label> 
      <input class="radio-button" type="radio" name="required" value="4"onchange="getRating(this)"> Great </label>

    <label>
    <input class="radio-button" type="radio" name="required" value="5" checked  checkedonchange="getRating(this)"> Awesome! </label>

  </div>


  <!-- If an answer <= "So-So or less", display: -->
  <div id="improvement" class="new">
    <span class="survey-question">How can we improve?</span>
    <textarea class="col-md-10" rows="3" id="answer" placeholder="Comments..."></textarea>
  </div>

</li>

如果在李克特 1-5 等级中选择低于 3 的任何内容，则显示评论文本框

Show text box for comments if selecting anything lower than 3 on a likert 1-5 scale

javascript

arrays

likert